Al-Fa'iz bi-Nasr Allah, born Abūʾl-Qāsim ʿĪsā ibn al-Ẓāfir on May thirty-first, eleven forty-nine, ascended to the throne of the Fatimid caliphate at a tender age of five. His reign, which lasted from eleven fifty-four to eleven sixty, marked him as the thirteenth and penultimate caliph of the Fatimid dynasty in Egypt.
Raised in a tumultuous political environment following the assassination of his father by the vizier Abbas ibn Abi al-Futuh, Al-Fa'iz's life was largely dictated by the ambitions of those around him. He became a puppet ruler under the influence of Abbas' successor, Tala'i ibn Ruzzik, which limited his ability to govern independently.
Despite his royal status, Al-Fa'iz faced significant personal challenges, including the burden of epileptic seizures. His reign was cut short when he succumbed to an episode at the young age of eleven. Following his untimely death, his nephew, al-Adid, succeeded him as the final Fatimid caliph, marking the end of an era.